Dynamic mechanical characterization and modelling of polypropylene based organoclay nanocomposite
1 Qatar Environment and Energy Research Institute, Qatar Foundation, PO Box 5825, Doha, Qatar
2 National Engineering School of Metz, Laboratory of Mechanics, Biomechanics, Polymers and Structures, 1 route d'Ars Laquenexy, 57078 Metz, France
3 ICUBE Laboratory-CNRS, University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France
4 Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, ECPM-LIPHT, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France
a Corresponding author: firstname.lastname@example.org
Published online: 7 September 2015
In order to investigate the dynamic behaviour of polypropylene based organoclay nanocomposite, the polypropylene matrix and a master batch of polypropylene modified anhydrid maleic were mixed by means of melt mixing technique. The experimental characterization was performed by using split Hopkinson pressure bars (SHPB), at different strain rates and temperatures. A significant increase of the yield stress of nanocomposite was shown with the present of organoclay, comparing to neat PP. A three-phase approach based on the micromechanical formulation of the cooperative model is proposed to model the yield behaviour of the polymer nanocomposite. Our proposed approach accounts for strain rate and temperature effects as well as the organoclay exfoliation effect. The predictions of models for the nanocomposite yield behaviour showed a good agreement with experimental data.
© Owned by the authors, published by EDP Sciences, 2015
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